[1] Kindai Univ, Fac Med, Osaka, Japan
[2] Natl Taiwan Univ Hosp, Taipei, Taiwan
[3] Natl Taiwan Univ, Ctr Canc, Taipei, Taiwan
[4] Seoul Natl Univ Hosp, Seoul, South Korea
[5] Natl Canc Ctr, Singapore, Singapore
[6] Univ Ulsan, Asan Med Ctr, Seoul, South Korea
[7] Chang Gung Mem Hosp, Taipei, Taiwan
[8] Chinese Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China
[9] Yokohama City Univ, Med Ctr, Yokohama, Kanagawa, Japan
[10] Johns Hopkins Singapore Int Med Ctr, Singapore, Singapore
[11] Bristol Myers Squibb, Princeton, NJ USA
[12] Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China